Leaching of copper from chalcocite with acidic acetonitrilecopper sulphate system was studied.研究了用酸性乙腈硫酸铜体系从辉铜矿中提取铜.The deep oxidation and groundwater leaching solubilizes much of the loosely bound uranium.深部氧化和地下水淋蚀使大部分...
你总是对全国赛马大会下点注吗？Do you always have a bet on the Grand National?休斯敦被选作大会的会址。Houston was chosen as the site for the convention.他在大会发言中作了更进一步的阐述。He went even further in his speech to the conference....
Last week we visited Lu Xun's Memorial Hall.上星期我们参观了鲁迅纪念馆.Many people are now speculating whether we will demolish the Memorial Hall.现在世界上都在猜测我们要毁掉纪念堂.The memorial hall was built one year after his death.他死后一年,纪念馆建成...